What chemicals are found in crude oil?

A mixture of compounds, which are mostly hydrocarbons

What is the first stage in the fractional distillation of crude oil?

Heating, to vaporise the hydrocarbons

Heating, to make it a hot liquid

What happens to the viscosity of hydrocarbons as the length of the molecule increases?

Longer hydrocarbons are more viscous

All hydrocarbons have the same viscosity

Shorter hydrocarbons are more viscous

The alkanes are a homologous series. What is the general formula of the alkanes?

n carbon atoms, 2n+2 hydrogen atoms

n carbon atoms, 2n hydrogen atoms

2n carbon atoms, n hydrogen atoms

n carbon atoms, n+2 hydrogen atoms

What property allows us to separate hydrocarbons during fractional distillation?

Different hydrocarbons have different boiling points

Different hydrocarbons have different melting points

Different hydrocarbons are different colours

Some hydrocarbons have a positive charge and others have a negative charge

Crude oil is finite because we use it before more can be formed. How was crude oil formed?

From the remains of an ancient biomass, consisting mainly of plankton, that was buried in mud

Mostly from the remains of dinosaur bones

Why, in terms of column temperature, do the fractions condense at different levels in the fractionating column?

The column is hotter at the bottom and cooler at the top

The column is cooler at the bottom and hotter at the top

All the column is at the same temperature

The column has a hotter section halfway up

What happens to the boiling point and flammability of hydrocarbons as the length of the molecules increases?

Longer hydrocarbons have higher boiling points and are less flammable

Longer hydrocarbons have lower boiling points and are less flammable

Longer hydrocarbons have higher boiling points and are more flammable

Longer hydrocarbons have lower boiling points and are more flammable

How many carbon atoms and hydrogen atoms are there in propane?

3 carbon atoms, 8 hydrogen atoms

2 carbon atoms, 6 hydrogen atoms

4 carbon atoms, 8 hydrogen atoms

3 carbon atoms, 6 hydrogen atoms

Crude oil is made up of:

A mixture of different hydrocarbons

Extremely large hydrocarbons which are broken up once extracted

ORGANIC CHEMISTRY

Authored by Elizabeth Jacob

Chemistry

11th Grade

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many carbon atoms are in propane

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Name this alkane

Methane

Ethane

Propane

Butane

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Name this alkane

Methane

Ethane

Propane

Butane

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.

single

double

triple

quadruple

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

General formula of Alkane is

C_nH_2n+2

C_nH_2n

C_nH_2n+1OH

C_nH_2n+1COOH

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Hydrocarbons are compounds that contain

Carbon, only

Carbon and Hydrogen, only

Carbon, Oxygen, and Hydrogen, only

Carbon, Oxygen, Hydrogen, and Nitrogen, only

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ORGANIC CHEMISTRY

How many carbon atoms are in propane

If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?

Name this alkane

Name this alkane

The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.

General formula of Alkane is

Hydrocarbons are compounds that contain

Hydrocarbons burning is an example of what type of chemical reaction ?

A saturated hydrocarbon is an ... ?

Classify the compound based on the functional group present.

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